OTT (over-the-top) is any video content delivered over the internet, bypassing broadcast, cable, or satellite infrastructure — on any device. CTV (Connected TV) is a subset of OTT: the fraction that reaches a television screen. Every CTV impression is an OTT impression. Not every OTT impression is a CTV impression.
The distinction matters because the device shapes the audience, the ad format, the pricing, and the measurement. A viewer watching JioCinema on a mobile phone during a commute behaves differently from the same viewer watching on a smart TV at home. Lumping both under "OTT" obscures real differences in attention, context, and commercial value.
The definitional breakdown
OTT: the broader category
OTT stands for "over-the-top" — the content arrives over the top of the existing internet connection, without needing a dedicated broadcast or cable pipe. OTT covers:
- Video on a mobile phone (JioCinema app, YouTube mobile)
- Video on a laptop or desktop browser (Hotstar.com, Netflix on Chrome)
- Video on a tablet
- Video on a television screen via the internet (CTV)
When a platform reports "OTT viewership" or "OTT reach," they are aggregating all of these screens unless they specify otherwise. For media buyers, this aggregate number can be misleading — mobile-heavy OTT reach is priced and behaves very differently from TV-screen CTV reach.
CTV: the TV-screen subset
CTV is OTT that arrives on a television screen. The screen is the filter. If the content is internet-delivered and the screen is a TV, it is CTV. The mechanism — smart TV app, streaming stick, set-top box, gaming console — does not change the classification.
CTV is characterised by:
- Lean-back viewing behaviour: Viewers are at home, relaxed, watching intentionally chosen content, often with others in the room.
- Longer viewing sessions: Average session length on CTV is significantly longer than mobile OTT [NEEDS SOURCE — Nielsen or platform-reported data].
- Non-skippable advertising: Most CTV platforms enforce non-skippable pre-roll and mid-roll formats. Compare this to YouTube mobile where 5-second skip is standard.
- Co-viewing: Multiple people in a household often watch the same CTV session. This means one impression may represent 2–3 viewers — an undercounted reach that advertisers benefit from but measurement systems struggle to capture.
Why the distinction matters for buying and measurement
Pricing
CTV CPMs are higher than mobile OTT CPMs — typically 2–4x higher in markets where both are available, reflecting the premium viewing environment and non-skippable formats [NEEDS SOURCE — cite specific India benchmarks when available from FICCI-EY or platform data]. If a media owner bundles mobile and CTV inventory at a blended rate, the buyer is subsidising mobile CPMs with premium CTV budgets. Always ask for device-type breakdowns.
Ad format implications
OTT on mobile supports both skippable and non-skippable formats, vertical formats, and interactive overlays designed for touch. CTV is landscape-only, non-touch, and almost exclusively non-skippable 15s or 30s video. Creative built for mobile OTT does not automatically work on CTV — the viewing distance, screen size, and interaction model are all different.
Targeting and data
Mobile OTT targeting leverages mobile device IDs (GAID on Android, previously IDFA on iOS), location data, and app-level behavioural signals. CTV targeting uses IP address (for household-level geo), platform login data, and content/genre signals. There are no cookies on CTV. The identity infrastructure is fundamentally different.
Measurement
Mobile OTT measurement can connect ad exposure to app installs, mobile web conversions, and in-app actions. CTV measurement struggles with the last mile — the TV does not have a browser, so connecting a TV ad impression to an online purchase requires probabilistic matching or a signed-in identity graph. This is the core measurement challenge of CTV everywhere, including India.
How India platforms straddle OTT and CTV
Most major India streaming platforms are simultaneously mobile OTT and CTV platforms — the same content, the same inventory, accessible across all screens. This creates both opportunity and complexity for buyers.
JioCinema
Available on Android mobile, iOS, browser, Android TV, Samsung TV, LG TV, and Fire TV. The JioCinema app on a smart TV is CTV inventory. The JioCinema app on a Jio phone is mobile OTT. The same platform, different inventory pools. When buying JioCinema programmatically, specify device type to separate CTV from mobile.
Disney+ Hotstar
Similarly cross-device. Hotstar's TV app is available on Android TV and major smart TV OS platforms. Hotstar is one of the more programmatically accessible India CTV environments, with availability through some DSPs for CTV-specific buying.
YouTube
YouTube on a smart TV is CTV inventory. YouTube on mobile is OTT. Google classifies these separately in DV360 and Google Ads. For India advertisers, YouTube CTV is a meaningful inventory pool — YouTube has strong smart TV penetration in India given the dominance of Android TV. It is often overlooked in India CTV discussions because it is not "premium OTT" but the scale and viewing time is significant.
SonyLIV and Zee5
Both available on smart TV platforms. Smaller CTV reach than JioCinema or Hotstar, but meaningful for category-specific buys (sports, regional content, news). Programmatic access is limited — most buying is direct IO with platform teams.
Practical guidance for India media planners
When a platform or publisher presents you with "OTT reach" numbers:
- Ask for the device breakdown. What percentage of that reach is CTV (TV screen) vs mobile vs desktop? A "50 million OTT reach" claim that is 80% mobile is very different from one that is 40% CTV.
- Confirm ad format by device. What runs on CTV? What runs on mobile? Are you buying a non-skippable CTV placement or a skippable mobile pre-roll?
- Get separate CPMs. Do not accept a blended CPM without understanding the device mix. CTV CPMs should be higher; if a blended rate looks suspiciously cheap, the CTV fraction is probably small.
- Clarify measurement by device. How will CTV impressions be reported? Is there third-party verification? What attribution methodology connects CTV exposure to outcomes?
- Do not assume cross-screen deduplication. A viewer counted in mobile OTT reach and in CTV reach may be the same person. India cross-platform deduplication is not standardised. Double-counting reach is a real risk in campaign reporting.
The one-sentence summary
OTT is the delivery method (internet video, any screen). CTV is one specific destination (internet video on a television screen). For serious media buying, always separate them — they are different audiences, different formats, different prices, and different measurement problems.